Stator winding device



Mak-gh 4, 1947. R. F. BRENNEN 12,415,735.

STATOR WINDING DEVICE Filed Oct. 30, 1944 E I .lNvx-:NTOR l ROLMDFRE/vf/v Patented Mar. 4, A1947 Ronald F. Brennen, Valley Stream, NY., assigner to General Die-Stamping-Tool Company, New f York, N. Y., al partnership i Appliatianoctober so,1946,*sannita.561,065- p vri claims. (criada-f1) This invention relates to winding and tormeans and methods for windingvwire or similar strands about articles of special shape and more particularly to apparatus-and devices for winding magnet coil wire aroundfthe yoke of non-concentric 'motor cores having projections which would interfere with the Winding.

While the inventionhas lbroader application, it also relates specifically' to a method and means to facilitate thel winding-of the'ld magnetV coil onthe stator-core of va bi-polar shaded pole motor of non-concentric design having parallel poles,

and a yoke connecting the poles at one end of the motor said poles on the opposite end having opposed curved pole faces between which the rotor of the motor is to be disposed, said stator core being, Whilellaminated inlmechanical .effect a one-piece stator with the .poles permanently fixed on the yoke in parallel relation, the struc;- turesof the poles having end projections atA the corners of the curved pole faces, on which the Wire might be caught during winding.

Therefora principal objects of the invention are to provide improved-devicesfor guiding the wire through the narrow `space between the curved pole faces and to prevent'the wire from -being caught on said projections.

The inventive feature for the accomplishment of these and other objects rare shown herein, briey stated,.,.in connection with-,a stator core of va bi-polar motor having a yokev at one end and having ends having'opposed faces havingcorner projections, the core being heldby a'rotar'y clamping block for rotating the core on thelaxis To prevent the wire being Wcund` `around the yoke from being caught on the corners of the yoke.

of the pole faces, there are; provided a pairof collar blocks, each having a longitudinal opening therethrough,-` adapted to slip'land i'lton theend of the pole andtogcover all ofjsaidicorners, each block being thin at the innerside and thick on the forward side, theY faces ofthe said side merg- ,ing to form cams overi ,which the wire slides. A'Suitable means are ,provided for locking the core in the clamping block and for locking saidv collar yfeci: simplicity and, eilciency` in such means and to `'provide an, extremely` `simple.- 4device 201 apparatus of this kind which is economical, convengient, speedy, durablegandrellablein. operation Without skilled Alaboi and is manufactureiandconvenient,to install.

Still: otherobjects ofthe inventin--will appear as' the description proceeds? and while -herein detailsfofi the invention. areA describedA in:V the specification and some of the claims, the inventionf as described in the-broader claims is 'not limited'tolthese, and many and various changes may be'made 4without,departingfrom the scope of the invention as claimed in the broader claims;

- In` the accompanying drawing showing, by way vof example, one of many .possible yembodiments of the invention; z l 'Figifisa side' elevation*offtheeassembly of the stator and guiding means; f i 1- Fig. 2 is a fragmental frontendr elevation, partly in vertical section,th`e Slfctinnbeing taken substantially'on the linef2'-`2 of Fig.`"3, looking vin thedirection of thearrowsofsaidfline; ,..g

ing of the fieldmagnet coil 5;.on' the'statorfcorc` 6^ (Fig."3),- of av bi-polar` shaded pole,motor -off non-concentric design having 'parallelgpolesgfh andfayoke fconnecting the poles at oneen'd o f i the motor, said poles atxthe opposite-,end having rotor of. `the :motor is togfbe disposed". a aThe; illus-.-

trated stator core is madez-.of Ja stack2offlatz one j piece identical laminationsuriveted' together. and

y each constituting a partl'o'f saidyoke and 'poles wherebyA said stator is inlinechanicalleffect a onepiece "stator with the poles permanently xed'on the yoke in parallel relation, the stator core jbe'ing provided witha= plurality .of holes .therethrough perpendicular Vtoi l the "flaminations -and used=for mountingthe. 'cor'e and structure-thereon and se'- curing theiflaniriatinsftogether;l,.fjf-

,l @An simulating sheet 1:12 l Vand ari insulating' Iwhich the'wire might` .be icaught during iwinding;

vry'. economical to and means to prevent the wire from beingA thus caught will be described hereinafter.

Means for rotating the stator core the spool.' Thef means" here shown, by'wayL of example,A comprises a suitably mountedl and elongated clamping block 20 having a bore l2l (Fig. 4) therethrough in. whicl'iasaid shaft is:

keyed, as by thefkey 22, wherebyftlie'fblocl isfheldfv fast on theend of the shaft, the block being prof driven horizontal rotary shaft I1 which Amay be' the shaftrof a motor I8, which shaft` carries an1 vided with an elongated recess;23 transverse yto; y

the axis of the shaft and laterally open .in a directionaway from the shaft, in which onelp'ole'v 6 of the motor core is adapted to longitudinally Y lie andfit;..with the spoolf coaxiallwithizthe: shaft and the polesexten'dingiradially-from saidi axis in: one direction, said; block beingelongated; inV

tliei other' direction; asyat 24a to. counterbalance the weightfoffthe poles, to: avoidsvibration :of: the shaftf' The wallsof thefrecessr23 arecutaway as at 25 (Figa-41) adjacent to thershaft; to` accommodate rivets in thee` stator; whichV hold the? laminations together.: l Y v f v i Said block isiprovidedzwith alined bores: 21; 28 on oppositeifsides ofv saidf recess near the inner end of the block, said bore 21 being threaded and receiving a: setescrewrZ Szfadjustable to :engage the side of the pole to accommodate'poles of slightly different thickness: Y

'Means for locking the stator core Means-are: provided',` VbyA Way of' example,` for quickly and efficiently. locking t he stator in the recess 23,' said'` meanszfincludlrrg a: pin; 3,0 slidable the..` bore- 28 whichY isfsmcoth. Said. pin: isA

y 'provi'ded'with azreducedziinner errd3l adapted vto t in a hole inthe pole, the outer endiof thepin havinganexteriorhead32 having'afsiotSS therethrough The block 20'-hassthereirr a.' transverse slot 35 (Fig. 3) parallelwithand near the inner end thereof and radialto the pin 30 and provided at tire-'endfmo'st remot'fromtheipinzwith all'arge 'boreAA 36 l perpendicularYto the'f slotted" face'Y ofA the lblockv and fhavingf a closed"V bottom; A lever 3-1'- is intermediatel'ypivoted'l irrV said slot; on a; pin` 3'8 fjpassingfthroughthe' slot;tlief active end of the lever being loosely engaged'in the slot 33? off the 'head'A 32, the: other end forming. arrV angularly Y AprojectingY handle 39" '(Fig; 2)..` A.V compression tween' its'fbottomi and saicthandleyieldablyfholds sai Sz reducedl` enid' in the` holei in; theastator:I and lloclssth'expolein placezl Preferably the :stator-rotatesin the; direction of theicurvedigarrow; of Figli-1,. i

' .Anyfsuitableaorfwell known', mechanism'. automatic: ori otherwise mayf be; provided forl feeding andguidingrthe#wireLto themotatingicoil, or; the wire jm'ayf: bei fediby hand; f andzlhereinlli.illustrate rods. the. wirezpasses" froml .th'ef listini;` the rods limiting lateral guiding movement of the wire. AV portion of a housing 44 or protective screen placed around and in front of the rotating stator is shown in Figs. 1 and 2. Such screen is provided with a horizontal Window 45at the space between the rods for limiting upward or downward movement ofthe Wire as the Wire is fed to the spool. Portionsof tlierod'andv screen shown inFig. 1 are broken away'in Fig;` 2 to" give view to'other parts of the assembly. Obviously other suitable guide means may be used.

' (Wine guiding collar-blocks Thef means: ta: facilitate guiding the wire to thevnarrow-spaced (Figs. 2 and 3) and to pre- Vventtli'e wires from being caught on the corners I4, I5v of thee curved pole face comprises a pair of substantially identical Wire-guiding and positioning collar-blocks `5 alike at both ends, each having a longitudinal opening 5I therethrough,

openat both'ends and adapted` to slip? on, the y end.Y of: the pole: and'just'long en'oug'hfto cover all-of-r said corners. of thetcurvedpole faces; Each openingv'l :iszformed'to fit the outermost side-,face oftheipoleand adjacent portionsof the-adjacent faces,'and tot on lsaid'cornersthe block'beingV additionally cut away as at 52t'oxrec'eiv'e the shadingl coils 53 ofthe poles.v Each blockis thin` at Vthe` side 54 adjacentA to the space. between the poles and thickatth'e'side'55i'toward the direction of' rotation of the-stator, the faces of the said adjacent andthe front andzrear sidesbeing curved, as at Stand 51igto merge into each other to form cam surfaces over-,which the; wireslides as' theystator rotates; Wherebyjthe Wire may,` be guidedr'by thesurfacesI into'said` space and past said corner projections out of I contact therewith and .asvclose as possible to thefend flanges I3 of theuspool: f f

Means for Zockz'ngjth'ecollar block in place Any suitable' means.' may 'be' provided for locking ori holdingsaid-Sblockslinplace, an example of Swhich'will now be described. f

Eachblock is'provided'intheforward .thick portion atithe'side 55 with apin-receiving bore 60 alined with, and; extendingto; an adjacent hole 6I .1in thezpole', andi withy a:,spring:receiving bore 6,21` having a vclosed bottom 63 spacedfrom the other. bore, anda slot;` 641i connecting them. A lockpin 6 5":slidab'le' in ',the pin-receiving 'bore' has areduced inner end` 66': engageable inV said hole BIL ofth'e pole; Said pin hasta transverseslot ini the' outer.` end'in which is engaged the 'active endof a lever: 10 intermediately fulcrumed in saidslotfll' on ay pivotpin 1I! close to thelock pint remote fr'orn then spring receiving bore. `A spring? II coi'npres'sed..betweenA said" lever and said.: bottom,V 63.4 presses vthe, pin vtigl'itly'int'o lock'-l support', andlwhilefthe-motorisat"rest, onejpolfe of tli'elstatorf core isinsertedinl the'Y recess 23, as in Figs. l and3, the'lockingpin"3'0'being'fflrst withdrawn, and then released to Vallow 'thee rethe recess, the screw'29 is adiustedt'oinsure-that the core'sha'll'n'ot be too loo'sefin the recess;y

passing, relatively,v through the space`48 (Fig.L 2) with 'orf-without touching the faces 54, 5B as the case may be. As soon as the wire begins winding, it" vis moved, evenly laterally back and forth fromy side to side from one rod 43 to the other, with the proper tension. To insure that the Wire shall Wind close to the flanges I3,.the Wire ata limit of lateral movement is held against the `adjacent' rod 43 with sufllcient pressure and tension to cause the wire, after it has been cammed by theV face 5S to the space 48, to snap under the inner projection I4 to a `position close to the adjacent flange I3. In this manner, the wire may be wound substantially evenly and close to the flanges until the required amount is on the coil, after which the rotation is stopped, and the stator-core removed to make ready for the Winding'of another core.

The collar blocks may be placed on the pole ends to the position of Figs. 1 to 3, before or after the stator-core is clamped in place and before or after the wire is anchored to the spool. As both ends of the collar blocks are alike and because ofthe shape of the opening 5l, the collar blocks cannot be put on in wrong position. The pin 65' is merely withdrawn by means of the lever 10 as the collar-block is put in place and allowed to snap into place with the reduced end 66 in the hole 6|.

'The invention claimed is: 1. Winding apparatus comprising means for rotating, on the axis of-its yoke, a U-shaped stator having poles radial to the yoke having pole ends i having projections thereon; adapted to fit on said ends each having an opening"v adapted to receive the ends and projections, thereby to cover said projections; the side face of each collar adjacent fto the other collar and adjaeent`- side faces'of. such collar merging to vform cams. 2. Apparatus to facilitate Winding Wire around the stator core yoke at Vone end of a U-shaped bi-polar motor; said' apparatus comprising means for rotating the stator core on the axis of the yoke; a pair of collar-blocks each having an opening therethrough adapted to receive the end of the pole; thefinner side face and an adjacent side face of each block merging to form a cam.

3. l.Apparatus to facilitate Winding Wire around the stator core yoke at one end of a U-shaped loi-polar motor having the pole ends having opposed faces having corner projections; said apparatus comprising means for rotating the statorl core on the axis of the yoke; a 'pair of collarblocks each having an opening 'therethrough adapted ,to receive the end of the vpole and said faces-'and corners; the inner side face and adl jacent'side faces' of Neach block merging to form cams'over which the Wires may slide and means for holding said collar blocks in place.

4. Apparatus to facilitate the Winding of i-leld magnet wire around the stator core yoke at one end of a bi-polar motor having pole ends having opposed faces having corner projections, said apparatus comprising means for rotating the stator core on the axis of the yoke; a pair of collarblocks. each having a longitudinal opening therethrough adapted to slip and `t on the end of the pole and to coversaid'oorners; each block being thin at the inner side and thick at the forward side, the faces ofthe said sides merging to form cams over which the wire slides.

5. Apparatus as in claim 4, said block being provided in the forward thick portion with a. pin

f receiving bore alined with, and extending to, an

and collarsv from the' other bore and Aa slot connecting them;

a pin vacross said slot near 'the p in receiving bore: a lock-pinin the pin-receiving bore' having a re# duced inner end engageable ina hole ofz the pole, and a transverse slot in the outer end; ai lever intermediately fulcrumed in said-slot on saidpiv'bt pin; and a spring compressedbetween'said 'lever Y and said bottom for pressing the pinltightlyinto locking engagement with `thepolen' f Y 6.An` assembly to facilitate -thejwinding oi' flexible strands aroundthe yokeV at one end of Ia U-shaped member having arms having inner projections near the lother end, said assembly comprising means for rotating'the 'memberfon' theaxis of the yoke;' a pair of collar-blocks re"- spectively having longitudinal openings there# through adapted to slip and fit on the' end of the arm and to cover'all 'of said corners;'each block being thin at the inner side and thick at the forward side, the faces ofsaid'sidefmerging toform cams over which the :'wire slides'fand means for holding the collar blocks in place; and guide means disposed a short distancefrom 'the stator for limiting 'lateral movement of tliewire while guiding it to the rotating coil'. I '7. An assembly as in claim 6, said guide mean comprising a pair of spaced 'upright members and structure forming a pair of closely spaced horizontal opposed faces,y .said means and structure forming a guide opening elongated in the direction of said axis and having 'the axis through the opening radial to said yoke.

8. Means to facilitate winding wire around the l stator-core yoke at one end of a bi-polar'motor having vthe pole' ends having opposed faces'hav-k ing corner projections, said means "comprising means for rotating the stator core on the axis lo1.'

the yoke; a'pair `of substantially identical wire.

guiding and positioningfcollar blocks'alike at both ends, each having a longitudinal opening therethrough open at bothy ends, adapted to slip onthe end of the vpole and just 'long enoughto cover all Vof said `cornersV of the vconvexed pole faces; each opening being formed to fit the outer# most side face ofthe pole and adjacent portions of the adjacent faces, and to fit on saidcorner's;

the blockbeing additionally-cut awayfto receive s shading coilsy of the poles; said block being thin at the side adjacent to the-space between vthe poles and thick at the side"towar`d the direction of rotation of the stator, the faces of the saidA adjacent sides and the front and rear sides being curved to merge into each other toV form -cam surfaces over which thewireslides vas the stator rotates,` Wherebythe Wire may be guided by the surfaces :into said space and past said corner projections out of contact therewith andV as vclose as possible to-the end `flanges of the spooland means for holding said blocks in place.

9. Means to facilitate winding wire around the yoke of a U-shaped member, said means comprising a collar having an opening therethrough adapted to receive an end of the member, the inner side face and an adjacent side ,face of the block merging to form a cam.

10. Means to facilitate winding wire around the stator core yoke at one end of a bi-polar motor having the pole ends having opposed faces having corner projections, said means comprising a collar-block Shaving an opening Ytherethrough adapted to receive the end of the pole and said corners; the inner side face and adjacent side faces of the block merging to forni cams.

. l1; Afrwire guiding;andipositioning?collar. block alike atlboth ends, and having.- a` longitudinal openingtherethrough open at-b0thr ends; .said

opening; kbeing rectangular in crossfsectionf. at

' .'oppositesidesrand.adjacent to one of said oDDO- s'itef'sidesY and cutl away adjacentto the other oppositeiside; :said block being thin at the side adjacenttothespace between thecut-away parts andiadjacent to one vcut-away part the block being vthickadjacentto the-other cut-away part, the

faces of the saidsidesgadjacent to the cut-away partsand thespacebetween being curved to merge into. each other.y toV form '.cam Y surfaces.

. 12:l Aablock asx. in c1aim.11, saidblockzbeing providedfinfthe thick portion with a-pin-receiving n p bore` andV extending; toi thel opening,y and with a pin; anda spring compressedA between said lever 13. Apparatus to facilitate'the-fwin'ding of the eld magnet coil-ontheUshaped stator coreof a bi+polar motor having lparallel poles, anda yoke connecting the poles -at one '-end of the motor, said polesbeing at thefoppositeend'andfhaving opposed:` curved pole facesfa" spool around said yoke; means` forfrotating-th'eV stator corero'nfthe airis,V of the;spoolfandiyokeasaid` apparatus comsaid slot foniaY pin i passing-through'-thevslot; the:

active end of the 'lever` being loosely-engagedza.in'k

the sloti of thepin, the. other end formingfian angularlyv projecting handle; and sa compression relationbetweenfwhich the Wirel passesifroma-the hand; and a protective screen placed aroundfand.'

Vin front ofthefrotating stator and providedwith a horizontal window at the spacebetween tl-iei an elongated clamping block having` a' bore there.;

through receiving fsaid shaft Wherebythe Yblock is held fast on the end ,of4 the shaft, the4 block being provided Withan elongated recessftrans verse to the axis of the shaft andr` laterally open in a direction awayfrom thel shaft in= whichA one pole of a U-shapedmotor-core-isadapted to longitudinally lie andflt with the yoke coaxial with the sha-italici the poles extending radially;

prising a rotary shaft; aclamping block fast VKon v"tlfiefbottom, with' the spoolcoaxial'with the shaft;

and meansto hold-the stator pole in saidrecess.

14; Apparatus as inclaiml3said block having on..opposite-sides of said recess boresalined with oneopeningf of the pole'near the inner end of theblock; oneof said bores'being threaded and receiving. a -setfscrew adjustable to engage the side-ofl the polez to accommodate poles of slightly d differentV thickness; theother boreV being smooth and havingja4 pinslidable therein and. provided with a reduced inner'endzadapted tol engage in said hole-of the pole; the outer end ofthe pin having an exterior head having a slot therethrough; said block liavingltherein a transverse s1ot=in oneface thereof parallel with and near lthe inner end thereof` and radial to the pin and provided at the: end mostl remote from the pin witha largebor'e perpendicular to the slotted face f of: theblock; a'lever `intermediately pivoted in from said axis in one direction; said block being elongated in the. other direction to counten-v balance the weight of the poles to avoid vibration of the shaft; the Walls of` the groove beingfcut away adjacent to the shaft to accommodate-rivets in the. stator; said block having on oppositesidesl oir-.said recess bores alined Withrone opening of thevpole near the inner end of the block; one. of said bores being threaded and receiving a'sete screw adjustable to engage the side of the :polefto accommodate poles` of slightly different thickness; the other boreabeing smoothandhavinga` pin slidable therein vand provided With afreduced inner end adapted to engagein a hole of thepole; and meansfor yieldably holding said pin in place.

17. Winding apparatus comprising means for rotating, on theaxis of its yoke, aA U-shapedrstator having poles radial to the -yoke and havingpole REFERENCES CITED r:Che following references areofA record inrthe le of this. patent:4

UNITED STATES PATENTS Number Name Date 2,275,995 Schneider 1 Mar. 10,1942 1,371,647 Sandell Mar'. 15,'1921 1,518,209 McCord ..-r Dec. 9 1924 

